Wednesday, May 23, 2012

[UV] Bidens flower: Baader-U vs Jupiter-U filter for reflected UV ultraviolet photography

Again more about that new Jupiter-U filter of mine. This time it is about a Bidens ferulifolia flower.

[click on image to see a larger one]

All triptychs are presented VIS left, Baader-U middle, Jupiter-U right:

The separating greenish ring between the UV bright tip and the UV dark petal part captured my attention and needs further research.

Bidens is one of my "standard" UV photography targets, as it has a very prominent bright UV petal tip reflection:

It peaks quite prominently around 365nm which my spectral reflection measurement clearly has proven.

Stay tuned, more will follow on that fascinating subject...

More info on this very interesting field may be found on my site